which sr20det with what turbo? than can handle a good ammount on stock motor, but stock turbos can only push so far
theres always a debate about this...from all the different info ive read/gathered and local guys ive talked to, 13psi is max eff and the verge of damaging turbo for prolonged periods.
a guy named greg here in tampa got his stock s13 turbo rebuilt to factory specs, no upgrades and ran around on about 15pis for a month straight...then it went fizzle (lol)
but he did run like a 13.1 on just the boost increase
fun while it lasted i guess
-chris